Conduit end treating tool

Abstract

A tool for cleaning, deburring, burnishing, or otherwise treating an end of a tubular conduit comprises a rotatable body coupled to a carrier provided with an abrading substance. In one form the carrier may be accommodated within the conduit, whereas in another form the carrier is adapted to accommodate the conduit. In each case the carrier is axially slotted to enable it to expand and contract radially to cause the abrading material to engage the conduit. The body and the carrier are telescoped for relative movement and are provided with complementally tapered surfaces which react in response to relative telescopic movements to effect radial expansion and contraction of the carrier.

I claim: 
     
       1. A tool for treating an end of a conduit comprising a rotatable body member; a hollow carrier member , said carrier member being axially slit to enable radially expanding and contracting movements thereof; means coupling said body member and said carrier member for relative telescoping movements and for conjoint rotation; cooperable means on said members operable in response to relative telescoping movements thereof to effect radial expansion and contraction of said carrier; and abrading means carried by said carrier member for engagement with and disengagement from a surface of said conduit in response to said radial movements of said carrier. 
     
     
       2. A tool according to claim 1 wherein said body member is accommodated within said carrier member. 
     
     
       3. A tool according to claim 2 wherein said cooperable means comprises complementary tapering surfaces on said members confronting each other. 
     
     
       4. A tool according to claim 1 wherein said body member comprises a cylindrical housing within which said carrier member is accommodated. 
     
     
       5. A tool according to claim 4 wherein said cooperable means comprises tapering surfaces on said carrier member and bearing members carried by said body member in confronting, engaging relation with said tapering surfaces. 
     
     
       6. A tool according to claim 1 wherein said coupling means comprises at least one projection on one of said members accommodated in a groove formed in the other of said members. 
     
     
       7. A tool according to claim 6 wherein said projection is on said carrier member and said groove is in said body member. 
     
     
       8. A tool according to claim 1 including a guide member connected to said body member and being of such size as to be accommodated within a conduit being treated. 
     
     
       9. A tool according to claim 8 wherein said guide member tapers and has its surface formed as a reamer. 
     
     
       10. A tool for treating one end of a conduit comprising a rotatable body member tapering toward one end thereof to enable said one end to be accommodated within said conduit; a tubular carrier member telescopingly mounted on said body member and having a cylindrical outer surface and an inner surface tapered complementary to that of said body member and seated on the latter, said carrier member having an external diameter such as to enable it to be accommodated in said conduit and being axially slit to enable radial expansion of said carrier member; means coupling said members to one another for conjoint rotation; means carried by said carrier member for engagement with said conduit and being responsive to such engagement to effect relative telescoping movement of said members in a direction to cause radial expansion of said carrier member within said conduit, and abrading means carried by said carrier member on its external surface for engagement with the inner surface of said conduit in response to radial expansion of said carrier member. 
     
     
       11. A tool according to claim 10 including yieldable means acting on said carrier member and biasing the latter to move relative to said body member in the opposite direction. 
     
     
       12. A tool for treating an end of a conduit comprising a rotatable, hollow body member of such size as freely to accommodate therein said conduit end; a hollow carrier member telescopingly accommodated within said body member and having a central opening of such size as freely to accommodate therein said conduit end, said carrier member being axially slit to permit radial expansion and contraction thereof; means coupling said members for conjoint rotation; means carried by said carrier member for engagement with said end of said conduit and being responsive to such engagement to effect relative telescoping movement of said members in one direction; means responsive to said telescoping movement for contracting said carrier member radially toward and into engagement with said conduit; and abrading means carried by said carrier member in a position to engage said conduit in response to said radial contraction of said carrier member. 
     
     
       13. A tool according to claim 12 including yieldable means acting on said carrier member and biasing the latter to move relative to said body member in the opposite direction. 
     
     
       14. A tool according to claim 12 including a reamer carried by said body member in a position to be accommodated in said conduit when the latter is accommodated within said carrier member. 
     
     
       15. A tool according to claim 12 wherein said means for contracting said carrier comprises rollers carried by said body member in engagement with tapered surfaces on said carrier member.